WTT: Rem STD 700 Action For Rem 700 Ultra Action

I am looking to do a build but don't want the hassle and expense of changing bolts and bottom metal. I am looking for a Rem 700 action with an Ultra Mag bolt face, can be barreled or unbarreled. I have an older 700 blued action with a .280 barrel on it. The trigger has been worked over and pulls right around 2.5 lbs.